I usually want to see track results rather than bench racing. PRC's stuff does what it does, and it proves the numbers he gives. I've seen this first hand having closely looked over his work - and not just his heads. The huge numbers I see elsewhere are always bench and dyno numbers and are never backed up on another peice of equipment. Nothing associated with a car racing in some form where actual output could be quantified without ambiguities. I'm all for teting and bench racing, but unless it's accelerating a mass downa track, it's just conjecture.